captcha_code_1 = Math.floor(Math.random()*10);
captcha_code_2 = Math.floor(Math.random()*10);
captcha_code_3 = Math.floor(Math.random()*10);
captcha_code_4 = Math.floor(Math.random()*10);
document.write("<div class=\"captcha_code\">");
document.write("<div class=\"captcha_code_"+captcha_code_1+"\"></div>");
document.write("<div class=\"captcha_code_"+captcha_code_2+"\"></div>");
document.write("<div class=\"captcha_code_"+captcha_code_3+"\"></div>");
document.write("<div class=\"captcha_code_"+captcha_code_4+"\"></div>");
document.write("</div>");
$.ajax({type: "GET",url: "/captcha_code/"+captcha_code_1+captcha_code_2+captcha_code_3+captcha_code_4});